Refrigerating and ice-making apparatus.



W. PFLEIDERER.

REFRlGERATING AND ICE MAKING APPARATUS.

APPLICATlOH FILED MAY 17. 1915.

1,169,675, Patented Jan. 25, 1916.

2 SHEETSSHEET I.

W. PFLEIDERER. I

REFRIGERATING AND 10E MAKING APPARATUS.

APPLICATION HLED MAY 17; 1915. ifii59f575. Patented Jan. 25, 1916.

' 2 SHEETSSHEET 2- WALIER PFLEIDERER, 0F LONDON,

ENGLANDI REFRIGERATING AND ICE-MAKING APPARATUS Specification of Letters Patent.

Patented Jan. 25, 1916.

Application filed May 17, 1915. Serial No. 28,784,

To (ZZZ whom it may concern:

Be it; known that I, Vlhnrnrz PFLEIDERER7 a subject of the King of Great Britain and Ireland, and residing at Kingsway House, Kingsiva v, Loncloi I W. (1., l lnglantlv gineer. have invented Certain new and ful Improvements in Refrigerating and lee- Makino" Apparatus, of which the following is a specification.

This invention relates to improvements in refrigerating and ice-making ap iiairtns of th A absorption type, its objectbeing to devise a form of apparatus which shall be Cheap to construct while at the same time being siinple. and otlicieut; in its operation The invention consists in refrigerati 5. and ire-making: apparatus of the type referrecl to comprising in combination a generatingvessel and a retro rating vessel coin niunicatiug \viz'h mu: :hthtllltl by a pipe or the like, a fixed mating tank and means for niechanieallv reversing the positions of the two vesselsso that it may be alternately in niersed in the rooting tank.

The invention also was sis in other details and arrangements hereinafter more particularly referred to.

The accompanying drawings illustrate one mode of carrying out the inv anion.

-lf igure l is a side sectional elevat ion showing' one convenient form of apparatus constructed in art-ordanee with the invention and in the position which it own-z nes during the initial stage of the operation of the machine. Fig. 2- is a side elevation showing the apparatus in the position which it occupies in the second stage of the operation. Fig. 3 is a front elevation of the apparatus in the position of Fig. 2. Fig. i is a fragmentary view illustrating a detail which may be employed in eonneotimi with the apparatus.

1n carrying my invention into effect in one convenient manner as, for example, in its application to ret'rigeratin; apparatus of the ammonia absorption type, I provide two cylinders or vessels, one of which (a (hereinafter referred to as the heating vessel) is arranged initially at a higher level than the second vessel 6 (hereinafter referred to as the refrigerating vessel) and may be provided, if desired, with any suitable form of anti-priming device.

The two vessels are connected by a suitable pipe connection 0, one end of which is situated near the upper part of the heating vessel While the other end opens i lower part of the refrigerating vessel these two ve :is a in their initial 1 as illustrator in l. a

tank 5 prov A cooling :1 with the apparatus and suitable means are adopted whereby the apparatus may be rotated or moved in such a manner that v. required the vessel (4 may take the i-rat r vessel 23 in the t so that the apparatus secusition sitpm} in Fin. :3. in one onvenient method of providing for ie apparatus .i connect the F by suitalz-le straps or like i of which provided with runnion j, the trunnions bein mounted in bearings carried by suitable pilla s or standards or other convenient frnlnek'vork pro ided in connection with the heat-n tank. Thus. in the construction shown the trunnion worrying bearings are sliclablv mounted in the standards by slots ii so that the bearings i the Wind apparatus may be raised or lowered by means of the toner; link mechanism 2 operated by suitable levins Z as rnav be re quired for removing either reeeptacl; or vessel from the rooting tank before the rotation of tl i apparatus performed. and for subsequentl immersing the required vessel in the cooling tank after the rotation.

. ()ne trunnion has mounted thereon a spur wheel k ivhirh is in engagement with an idle pinion rarrietl by the toggle link mechanism 1'. the pinion being adapted when the apparatus is raised by depression of the levers f, to engage with a pinion m nhirh may then be rotated by any suitable means in sueh a manner as to rotatethe apparatus in the direction shown by the arrow in Fig. 1. it will be clear; however, that any suitable form of cant mechanism or its equivalent may be adopted for the purpose, or the apparatus may be arranged to have a rotational movement in two directions at rio'ht means of the and 'lill them *means maybe employed forproviding for the rotation of the apparatus so that either flfvesselmay be immersed when required in the one cooling tank, v I

Fig. 4. is a.view illustrating an arrange- .;m je nt'-'that may be employed for still further "fe'guarding against the ossibility of, liqI-Z I mdflabsorbent "being, carrie by the gasjfrom )the heatin sel and WE interposed at a convenient level in tlie'cdnnectingpipe 0.

Vessel into the refrigeratin'g 've's ich consists'of a tank or trap s The operationof the apparatus as follows :'With the vessels in the. position shown in Fig. 1, the heating vessel a is v filled to any desired leveLwith the ammonia solution and the vessel heatedby a gas or oil burner, steam-pipe or other suitable means whereupon the gas evolved. passes from the heating vessel through the pipe I and is condensed within the refrigerating vessel 1) which is within the cooling tank so that at the end of the first operation the refrigerating vessel b contains liquid anhydrous ammonia While the heating vessel contains'water or Weak liquor or other absorbent medium. The heating medium is now removed from thejheating vessel and the. position of the vessels reversed in the manner above described so that the parts take the position shown in Fig. 2 in which the'heating vessel is now immersed within the cooling tank, and where the apparatus is required for ice-making the refrigerating vessel is placed in an ice-mold u which may be laced in er reversal. In this position it is to be noted that" the connecting pipe 0 now hasone end situated near'the' top pf the refrigerating vessel and the other end near the bottom of the heating vessel andbeneath the level of the absorbent contained therein. The cooling of the vessel a causes a reduction of pressure in the apparatus so that the-liquidanhydrous ammonia within the refrigerating vessel evaporates and the .gas passes through the pipe 0 into the absorbe'nt medium'within the heatin vessel through which it is forced to bubble by reason of the outlet from the pipe being situated beneath the level of the absorbent. 4 Where the apparatus is required for ice-' making as in the-example illustrated, there might be a tendency for the ice to form'unevenlywithin the ice-mold 011 account of the'lowering of the level of the liquid anhydrous ammonia within the refrigerating yes sel due to the evaporation, and for the ppf'pose o finsurin 1 that theformation sha'll- I-Ipre er to -[provide within thel" unifor "refrigera fig vessel a' lioilow Ior Ioth eikilrum v. confor the; drum and the refrigerating yessel in to be introduced within the drumso-as-to position before the appa- Letters Patent is w I. ar the re of the/refrigeratmg vessel so as to'leave a space 'wbetiviaznwhich space the evaporation progressively takes place, the evaporated liquid being replaced by fresh liquid from above the drum I I through the aperture :2; provided therein. 'I may provide a pipe 2 communicating with the interior of the drum and adapted to be closed by 'a plug or screw-cap Z, and-this pipe performs the useful functionlof enabling hotwater or other'heatinglmedium facilitate the removal of the, ice from the i I i exterior of the refrigerating vessel. n Notwithstanding the precautions that may be taken to prevent absorbent liqufonfro'm bein'g'carried over into the refrigerating vessel some may yet find its way thereinto, and v for this reason I prefer to provide theapparatu's with simple means whereby any liquor that collects in the-refrigerating vesselmay; bereadily and rapidly returned to the heat. ing vessel. For this pur'poseI:provide'the refrigerating vessel at its lower partwith a plate or diaphragm 3 extending from one wall of the refrigerating vessel nearly 'to the opposite vWall in onedifrectionandentirely between the two walls in thetransverse di-' rection so as to form as it were a pocket at the lower part of the refrigerating vessel in which any liquor collected therein s trapped if for this purpose the'apparatusbe rotated arrow n Fig. 1 and as thepipe e is connected to the lowest point of this pocket all liquid therein passes during the continued: rotation of the apparatus, through-the pipe 0 and into the heating vessel, and to facilitate the return of thisliquid through the pipe c I prefer to provide a pipe 2, establish: mg communication between both vessels and of sufiicient length that when the pipe cis n its horizontal position the upper part of the equalizing pipe 2 is above the level of the liquid within the pocket formed by the plate 3. 1

The foregoing is a description giving 11 broadly the nature of the invention, and it will be understood that the details of con- I struction and the'arrangement ofthe various parts may be'suitably modified as may be found necessary to give the best results what I claimflas new and desire to secure by 1 Refrigerating and ice-making apparav tus comprising a cooling tankystandards rising alongside the same and having upright 'lots,:.a. generatipg essel and a refrigeratngvessel, 'aifra-mework connecting said'ves 1 'se'ls' and havmgtrunnjonspro ecting through 1 said I slpts, toggle limi -mechanisms connect- I .l'ng the; extremities "of saidtrunnions with Q the standardauand levers for actuating-said r echanisms" to reise the trunnions in the 3 meagre slots and permit their rotation (so that said vessels may be alternately immersed in said cooling tank. I

2. Refrigerating and ice-making apparatus comprising a cooling tank, standards rising alongside the same-end having upright slots, a generating vessel and a refrigerating vessel, a framework connecting said vessels and having trunnions pro ecting-through said slots, toggle link mechanism connecting the extremities of said trunnions with the standards, a spur wheel fast on one of said trunnions, a pinion fast on the link connected therewith and enga in the spur wheel, a driving pinion with w 1ic said pinion is adapted to be engaged, and

-means for actuating said toggle link mechvessel, :1 refrigerating vessel,a pipe connection between said vessels, a cooling tank,

means for mechanically reversing the positions of said vessels so that they may be aland ice-making appa-' ternately immersed in the cooling tank, a hollow drum of smaller dimensions than but conforming in shape to the refrigerat ing vessel placed interiorly thereof and a 'pipe extending from the interior of said holow drum to the exterior of the refrigerat ing vessel.

5. Refrigerating and ice-making apparatus comprising a generating vessel and a refrigerating vessel arranged one above the other, a pipe connection between said vessels, a framework supporting said vessels and having trunnions, standards having slots into which said trunnions project, a

, cooling tank and means for'raising and then rotating said trunnions and framework so that said vessels may be alternately immersed in said cooling tank.

6. Refrigerating and ice-making apparatus comprising a generating vessel and a refrigerating vessel arranged one above the other, a pipe connection between said vessels, a cooling tank, means for rotating said vessels so that they may be immersed alternately in said cooling tank and means for withdrawing either vessel from the cooling tank before the apparatus as a whole is rotated. 1

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WALTER PFLEIDERER.

Witnesses:

H. H. MATTHEWS, 'P. E. RICHARD. 

